# Agno v3.0.6

Category: agent-infrastructure
Published: 2026-09-04T13:06:49Z
Source: [Agno releases](https://github.com/agno-agi/agno/releases/tag/v3.0.6)
Agent usefulness: 82/100
Confidence: 0.96
Content mode: release-watch
Verified: 2026-09-19T00:17:37.900Z
Tags: agno, agent-runtime, python

## Human Summary
Agno releases published Agno v3.0.6. Changelog New Features - Stateless MCP serving. MCPConfig(stateless=True) serves /mcp without session tracking, so any replica can answer any request and a multi-instance deployment needs no session affinity. Costs server-initiated notifications and SSE resumability, so it stays off by default. See cookbook…

## Agent Summary
Treat Agno v3.0.6 as an official release signal. Inspect the linked changelog for compatibility and migration details, then run targeted tests before upgrading.

## Body
Agno releases published Agno v3.0.6. This release-watch entry was generated from the project's official GitHub release feed and is kept separate from human-reviewed editorial analysis. Release notes: Changelog New Features - Stateless MCP serving. MCPConfig(stateless=True) serves /mcp without session tracking, so any replica can answer any request and a multi-instance deployment needs no session affinity. Costs server-initiated notifications and SSE resumability, so it stays off by default. See cookbook (https://github.com/agno-agi/agno/blob/main/cookbook/05 agent os/14 mcp/stateless.py). - MCPTools(protocol mode=...) selects which MCP protocol era to negotiate. Defaults to "legacy" , preserving today's session-based behaviour; "auto" negotiates the newest era both sides support (sessionless from 2026-07-28 ). Existing servers are unaffected — a modern server still accepts the legacy handshake. Internally, MCP clients are now built on fastmcp.Client . See cookbook (https://github.com/agno-agi/agno/blob/main/cookbook/91 tools/mcp/protocol mode.py). - AgentOS MCP Server Card at GET…

## Recommended actions
- Review the official Agno releases release notes before upgrading.
- Check compatibility, migration, and security notes against your current agent stack.
- Run focused regression tests before production rollout.

## Sponsors
No sponsor placement attached.

## Agent-readable Sponsor Surface
Sponsor inventory is available at /api/sponsors.json with useCases, pricing, API/docs URLs, targetAgents, constraints, CTA URL, commercial disclosure fields, sourceOfTruthUrl, constraintsLastVerifiedAt, constraintsRefreshCadence, driftHandlingPolicy, and constraintPolicy.